FAQ
On my Mac, LogMeIn Hamachi won't start when I press the power button. What can I do?
Issue
Objective
Environment
Procedure
Answer
Symptom
On the LogMeIn Hamachi application, when you click the power button you receive the following errorSystem Extension Blocked
A program tried to load new system extension(s) signed by "LogMeIn, Inc.". If you want to enable these extensions, open Security & Privacy System Preferences.
Cause
In OS X 10.13 High Sierra, Apple added additional security that blocks third-party kernel extensions by default.Resolution
Important: Certain System Preferences are blocked by macOS security when in a remote control connection.- On your Mac, open System Preferences by clicking the Apple icon > System Preferences...
- Click Security & Privacy.
- Click Allow next to System software from developer "LogMeIn, Inc." was blocked from loading.